415 lines
14 KiB
LLVM
415 lines
14 KiB
LLVM
; RUN: opt -S -loop-vectorize -force-vector-interleave=1 -force-vector-width=2 < %s 2>&1 | FileCheck %s
|
|
|
|
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32-S128"
|
|
|
|
@f = common global i32 0, align 4
|
|
@.str = private unnamed_addr constant [4 x i8] c"%d\0A\00", align 1
|
|
@c = common global i32 0, align 4
|
|
@a = common global i32 0, align 4
|
|
@b = common global i32 0, align 4
|
|
@e = common global i32 0, align 4
|
|
|
|
; It has a value that is used outside of the loop
|
|
; and is not a recognized reduction variable "tmp17".
|
|
; However, tmp17 is a non-header phi which is an allowed exit.
|
|
|
|
; CHECK-LABEL: @test1(
|
|
; CHECK: %vec.ind = phi <2 x i32>
|
|
; CHECK: [[CMP:%[a-zA-Z0-9.]+]] = icmp sgt <2 x i32> %vec.ind, <i32 10, i32 10>
|
|
; CHECK: %predphi = select <2 x i1> [[CMP]], <2 x i32> <i32 1, i32 1>, <2 x i32> zeroinitializer
|
|
|
|
; CHECK-LABEL: middle.block:
|
|
; CHECK: [[E1:%[a-zA-Z0-9.]+]] = extractelement <2 x i32> %predphi, i32 1
|
|
|
|
; CHECK-LABEL: f1.exit.loopexit:
|
|
; CHECK: %.lcssa = phi i32 [ %tmp17, %bb16 ], [ [[E1]], %middle.block ]
|
|
|
|
define i32 @test1() {
|
|
bb:
|
|
%b.promoted = load i32, i32* @b, align 4
|
|
br label %.lr.ph.i
|
|
|
|
.lr.ph.i:
|
|
%tmp8 = phi i32 [ %tmp18, %bb16 ], [ %b.promoted, %bb ]
|
|
%tmp2 = icmp sgt i32 %tmp8, 10
|
|
br i1 %tmp2, label %bb16, label %bb10
|
|
|
|
bb10:
|
|
br label %bb16
|
|
|
|
bb16:
|
|
%tmp17 = phi i32 [ 0, %bb10 ], [ 1, %.lr.ph.i ]
|
|
%tmp18 = add nsw i32 %tmp8, 1
|
|
%tmp19 = icmp slt i32 %tmp18, 4
|
|
br i1 %tmp19, label %.lr.ph.i, label %f1.exit.loopexit
|
|
|
|
f1.exit.loopexit:
|
|
%.lcssa = phi i32 [ %tmp17, %bb16 ]
|
|
ret i32 %.lcssa
|
|
}
|
|
|
|
; non-hdr phi depends on header phi.
|
|
; CHECK-LABEL: @test2(
|
|
; CHECK: %vec.ind = phi <2 x i32>
|
|
; CHECK: [[CMP:%[a-zA-Z0-9.]+]] = icmp sgt <2 x i32> %vec.ind, <i32 10, i32 10>
|
|
; CHECK: %predphi = select <2 x i1> [[CMP]], <2 x i32> <i32 1, i32 1>, <2 x i32> %vec.ind
|
|
|
|
; CHECK-LABEL: middle.block:
|
|
; CHECK: [[E1:%[a-zA-Z0-9.]+]] = extractelement <2 x i32> %predphi, i32 1
|
|
|
|
; CHECK-LABEL: f1.exit.loopexit:
|
|
; CHECK: %.lcssa = phi i32 [ %tmp17, %bb16 ], [ [[E1]], %middle.block ]
|
|
define i32 @test2() {
|
|
bb:
|
|
%b.promoted = load i32, i32* @b, align 4
|
|
br label %.lr.ph.i
|
|
|
|
.lr.ph.i:
|
|
%tmp8 = phi i32 [ %tmp18, %bb16 ], [ %b.promoted, %bb ]
|
|
%tmp2 = icmp sgt i32 %tmp8, 10
|
|
br i1 %tmp2, label %bb16, label %bb10
|
|
|
|
bb10:
|
|
br label %bb16
|
|
|
|
bb16:
|
|
%tmp17 = phi i32 [ %tmp8, %bb10 ], [ 1, %.lr.ph.i ]
|
|
%tmp18 = add nsw i32 %tmp8, 1
|
|
%tmp19 = icmp slt i32 %tmp18, 4
|
|
br i1 %tmp19, label %.lr.ph.i, label %f1.exit.loopexit
|
|
|
|
f1.exit.loopexit:
|
|
%.lcssa = phi i32 [ %tmp17, %bb16 ]
|
|
ret i32 %.lcssa
|
|
}
|
|
|
|
; more than 2 incoming values for tmp17 phi that is used outside loop.
|
|
; CHECK-LABEL: test3(
|
|
; CHECK-LABEL: vector.body:
|
|
; CHECK: %predphi = select <2 x i1> %{{.*}}, <2 x i32> <i32 1, i32 1>, <2 x i32> zeroinitializer
|
|
; CHECK: %predphi1 = select <2 x i1> %{{.*}}, <2 x i32> <i32 2, i32 2>, <2 x i32> %predphi
|
|
|
|
; CHECK-LABEL: middle.block:
|
|
; CHECK: [[E1:%[a-zA-Z0-9.]+]] = extractelement <2 x i32> %predphi1, i32 1
|
|
|
|
; CHECK-LABEL: f1.exit.loopexit:
|
|
; CHECK: phi i32 [ %tmp17, %bb16 ], [ [[E1]], %middle.block ]
|
|
define i32 @test3(i32 %N) {
|
|
bb:
|
|
%b.promoted = load i32, i32* @b, align 4
|
|
br label %.lr.ph.i
|
|
|
|
.lr.ph.i:
|
|
%tmp8 = phi i32 [ %tmp18, %bb16 ], [ %b.promoted, %bb ]
|
|
%tmp2 = icmp sgt i32 %tmp8, 10
|
|
br i1 %tmp2, label %bb16, label %bb10
|
|
|
|
bb10:
|
|
%cmp = icmp sgt i32 %tmp8, %N
|
|
br i1 %cmp, label %bb12, label %bb16
|
|
|
|
bb12:
|
|
br label %bb16
|
|
|
|
bb16:
|
|
%tmp17 = phi i32 [ 0, %bb10 ], [ 1, %.lr.ph.i ], [ 2, %bb12 ]
|
|
%tmp18 = add nsw i32 %tmp8, 1
|
|
%tmp19 = icmp slt i32 %tmp18, 4
|
|
br i1 %tmp19, label %.lr.ph.i, label %f1.exit.loopexit
|
|
|
|
f1.exit.loopexit:
|
|
%.lcssa = phi i32 [ %tmp17, %bb16 ]
|
|
ret i32 %.lcssa
|
|
}
|
|
|
|
; more than one incoming value for outside user: %.lcssa
|
|
; CHECK-LABEL: test4(
|
|
; CHECK-LABEL: vector.body:
|
|
; CHECK: %predphi = select <2 x i1>
|
|
|
|
; CHECK-LABEL: middle.block:
|
|
; CHECK: [[E1:%[a-zA-Z0-9.]+]] = extractelement <2 x i32> %predphi, i32 1
|
|
|
|
; CHECK-LABEL: f1.exit.loopexit.loopexit:
|
|
; CHECK: %tmp17.lcssa = phi i32 [ %tmp17, %bb16 ], [ [[E1]], %middle.block ]
|
|
; CHECK-NEXT: br label %f1.exit.loopexit
|
|
|
|
; CHECK-LABEL: f1.exit.loopexit:
|
|
; CHECK: %.lcssa = phi i32 [ 2, %bb ], [ %tmp17.lcssa, %f1.exit.loopexit.loopexit ]
|
|
define i32 @test4(i32 %N) {
|
|
bb:
|
|
%b.promoted = load i32, i32* @b, align 4
|
|
%icmp = icmp slt i32 %b.promoted, %N
|
|
br i1 %icmp, label %f1.exit.loopexit, label %.lr.ph.i
|
|
|
|
.lr.ph.i:
|
|
%tmp8 = phi i32 [ %tmp18, %bb16 ], [ %b.promoted, %bb ]
|
|
%tmp2 = icmp sgt i32 %tmp8, 10
|
|
br i1 %tmp2, label %bb16, label %bb10
|
|
|
|
bb10:
|
|
br label %bb16
|
|
|
|
bb16:
|
|
%tmp17 = phi i32 [ 0, %bb10 ], [ 1, %.lr.ph.i ]
|
|
%tmp18 = add nsw i32 %tmp8, 1
|
|
%tmp19 = icmp slt i32 %tmp18, 4
|
|
br i1 %tmp19, label %.lr.ph.i, label %f1.exit.loopexit
|
|
|
|
f1.exit.loopexit:
|
|
%.lcssa = phi i32 [ %tmp17, %bb16 ], [ 2, %bb ]
|
|
ret i32 %.lcssa
|
|
}
|
|
|
|
; non hdr phi that depends on reduction and is used outside the loop.
|
|
; reduction phis are only allowed to have bump or reduction operations as the inside user, so we should
|
|
; not vectorize this.
|
|
; CHECK-LABEL: reduction_sum(
|
|
; CHECK-NOT: <2 x i32>
|
|
define i32 @reduction_sum(i32 %n, i32* noalias nocapture %A, i32* noalias nocapture %B) nounwind uwtable readonly noinline ssp {
|
|
entry:
|
|
%c1 = icmp sgt i32 %n, 0
|
|
br i1 %c1, label %header, label %._crit_edge
|
|
|
|
header: ; preds = %0, %.lr.ph
|
|
%indvars.iv = phi i64 [ %indvars.iv.next, %bb16 ], [ 0, %entry ]
|
|
%sum.02 = phi i32 [ %c9, %bb16 ], [ 0, %entry ]
|
|
%c2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
|
|
%c3 = load i32, i32* %c2, align 4
|
|
%c4 = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
|
|
%c5 = load i32, i32* %c4, align 4
|
|
%tmp2 = icmp sgt i32 %sum.02, 10
|
|
br i1 %tmp2, label %bb16, label %bb10
|
|
|
|
bb10:
|
|
br label %bb16
|
|
|
|
bb16:
|
|
%tmp17 = phi i32 [ %sum.02, %bb10 ], [ 1, %header ]
|
|
%c6 = trunc i64 %indvars.iv to i32
|
|
%c7 = add i32 %sum.02, %c6
|
|
%c8 = add i32 %c7, %c3
|
|
%c9 = add i32 %c8, %c5
|
|
%indvars.iv.next = add i64 %indvars.iv, 1
|
|
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
|
|
%exitcond = icmp eq i32 %lftr.wideiv, %n
|
|
br i1 %exitcond, label %._crit_edge, label %header
|
|
|
|
._crit_edge: ; preds = %.lr.ph, %0
|
|
%sum.0.lcssa = phi i32 [ 0, %entry ], [ %c9, %bb16 ]
|
|
%nonhdr.lcssa = phi i32 [ 1, %entry], [ %tmp17, %bb16 ]
|
|
ret i32 %sum.0.lcssa
|
|
}
|
|
|
|
; invalid cyclic dependency with header phi iv, which prevents iv from being
|
|
; recognized as induction var.
|
|
; cannot vectorize.
|
|
; CHECK-LABEL: cyclic_dep_with_indvar(
|
|
; CHECK-NOT: <2 x i32>
|
|
define i32 @cyclic_dep_with_indvar() {
|
|
bb:
|
|
%b.promoted = load i32, i32* @b, align 4
|
|
br label %.lr.ph.i
|
|
|
|
.lr.ph.i:
|
|
%iv = phi i32 [ %ivnext, %bb16 ], [ %b.promoted, %bb ]
|
|
%tmp2 = icmp sgt i32 %iv, 10
|
|
br i1 %tmp2, label %bb16, label %bb10
|
|
|
|
bb10:
|
|
br label %bb16
|
|
|
|
bb16:
|
|
%tmp17 = phi i32 [ 0, %bb10 ], [ %iv, %.lr.ph.i ]
|
|
%ivnext = add nsw i32 %tmp17, 1
|
|
%tmp19 = icmp slt i32 %ivnext, 4
|
|
br i1 %tmp19, label %.lr.ph.i, label %f1.exit.loopexit
|
|
|
|
f1.exit.loopexit:
|
|
%.lcssa = phi i32 [ %tmp17, %bb16 ]
|
|
ret i32 %.lcssa
|
|
}
|
|
|
|
; non-reduction phi 'tmp17' used outside loop has cyclic dependence with %x.05 phi
|
|
; cannot vectorize.
|
|
; CHECK-LABEL: not_valid_reduction(
|
|
; CHECK-NOT: <2 x i32>
|
|
define i32 @not_valid_reduction(i32 %n, i32* noalias nocapture %A) nounwind uwtable readonly {
|
|
entry:
|
|
%cmp4 = icmp sgt i32 %n, 0
|
|
br i1 %cmp4, label %for.body, label %for.end
|
|
|
|
for.body: ; preds = %entry, %for.body
|
|
%indvars.iv = phi i64 [ %indvars.iv.next, %latch ], [ 0, %entry ]
|
|
%x.05 = phi i32 [ %tmp17, %latch ], [ 0, %entry ]
|
|
%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
|
|
%tmp0 = load i32, i32* %arrayidx, align 4
|
|
%tmp2 = icmp sgt i64 %indvars.iv, 10
|
|
%sub = sub nsw i32 %x.05, %tmp0
|
|
br i1 %tmp2, label %bb16, label %bb10
|
|
|
|
bb10:
|
|
br label %bb16
|
|
|
|
bb16:
|
|
%tmp17 = phi i32 [ 1, %bb10 ], [ %sub, %for.body ]
|
|
br label %latch
|
|
|
|
latch:
|
|
%indvars.iv.next = add i64 %indvars.iv, 1
|
|
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
|
|
%exitcond = icmp eq i32 %lftr.wideiv, %n
|
|
br i1 %exitcond, label %for.end, label %for.body
|
|
|
|
for.end: ; preds = %for.body, %entry
|
|
%x.0.lcssa = phi i32 [ 0, %entry ], [ %tmp17 , %latch ]
|
|
ret i32 %x.0.lcssa
|
|
}
|
|
|
|
|
|
; CHECK-LABEL: @outside_user_non_phi(
|
|
; CHECK: %vec.ind = phi <2 x i32>
|
|
; CHECK: [[CMP:%[a-zA-Z0-9.]+]] = icmp sgt <2 x i32> %vec.ind, <i32 10, i32 10>
|
|
; CHECK: %predphi = select <2 x i1> [[CMP]], <2 x i32> <i32 1, i32 1>, <2 x i32> zeroinitializer
|
|
; CHECK: [[TRUNC:%[a-zA-Z0-9.]+]] = trunc <2 x i32> %predphi to <2 x i8>
|
|
|
|
; CHECK-LABEL: middle.block:
|
|
; CHECK: [[E1:%[a-zA-Z0-9.]+]] = extractelement <2 x i8> [[TRUNC]], i32 1
|
|
|
|
; CHECK-LABEL: f1.exit.loopexit:
|
|
; CHECK: %.lcssa = phi i8 [ %tmp17.trunc, %bb16 ], [ [[E1]], %middle.block ]
|
|
define i8 @outside_user_non_phi() {
|
|
bb:
|
|
%b.promoted = load i32, i32* @b, align 4
|
|
br label %.lr.ph.i
|
|
|
|
.lr.ph.i:
|
|
%tmp8 = phi i32 [ %tmp18, %bb16 ], [ %b.promoted, %bb ]
|
|
%tmp2 = icmp sgt i32 %tmp8, 10
|
|
br i1 %tmp2, label %bb16, label %bb10
|
|
|
|
bb10:
|
|
br label %bb16
|
|
|
|
bb16:
|
|
%tmp17 = phi i32 [ 0, %bb10 ], [ 1, %.lr.ph.i ]
|
|
%tmp17.trunc = trunc i32 %tmp17 to i8
|
|
%tmp18 = add nsw i32 %tmp8, 1
|
|
%tmp19 = icmp slt i32 %tmp18, 4
|
|
br i1 %tmp19, label %.lr.ph.i, label %f1.exit.loopexit
|
|
|
|
f1.exit.loopexit:
|
|
%.lcssa = phi i8 [ %tmp17.trunc, %bb16 ]
|
|
ret i8 %.lcssa
|
|
}
|
|
|
|
; CHECK-LABEL: no_vectorize_reduction_with_outside_use(
|
|
; CHECK-NOT: <2 x i32>
|
|
define i32 @no_vectorize_reduction_with_outside_use(i32 %n, i32* nocapture %A, i32* nocapture %B) nounwind uwtable readonly {
|
|
entry:
|
|
%cmp7 = icmp sgt i32 %n, 0
|
|
br i1 %cmp7, label %for.body, label %for.end
|
|
|
|
for.body: ; preds = %entry, %for.body
|
|
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
|
|
%result.08 = phi i32 [ %or, %for.body ], [ 0, %entry ]
|
|
%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
|
|
%0 = load i32, i32* %arrayidx, align 4
|
|
%arrayidx2 = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
|
|
%1 = load i32, i32* %arrayidx2, align 4
|
|
%add = add nsw i32 %1, %0
|
|
%or = or i32 %add, %result.08
|
|
%indvars.iv.next = add i64 %indvars.iv, 1
|
|
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
|
|
%exitcond = icmp eq i32 %lftr.wideiv, %n
|
|
br i1 %exitcond, label %for.end, label %for.body
|
|
|
|
for.end: ; preds = %for.body, %entry
|
|
%result.0.lcssa = phi i32 [ 0, %entry ], [ %1, %for.body ]
|
|
ret i32 %result.0.lcssa
|
|
}
|
|
|
|
|
|
; vectorize c[i] = a[i] + b[i] loop where result of c[i] is used outside the
|
|
; loop
|
|
; CHECK-LABEL: sum_arrays_outside_use(
|
|
; CHECK-LABEL: vector.memcheck:
|
|
; CHECK: br i1 %conflict.rdx, label %scalar.ph, label %vector.ph
|
|
|
|
; CHECK-LABEL: vector.body:
|
|
; CHECK: %wide.load = load <2 x i32>, <2 x i32>*
|
|
; CHECK: %wide.load16 = load <2 x i32>, <2 x i32>*
|
|
; CHECK: [[ADD:%[a-zA-Z0-9.]+]] = add nsw <2 x i32> %wide.load, %wide.load16
|
|
; CHECK: store <2 x i32>
|
|
|
|
; CHECK-LABEL: middle.block:
|
|
; CHECK: [[E1:%[a-zA-Z0-9.]+]] = extractelement <2 x i32> [[ADD]], i32 1
|
|
|
|
; CHECK-LABEL: f1.exit.loopexit:
|
|
; CHECK: %.lcssa = phi i32 [ %sum, %.lr.ph.i ], [ [[E1]], %middle.block ]
|
|
define i32 @sum_arrays_outside_use(i32* %B, i32* %A, i32* %C, i32 %N) {
|
|
bb:
|
|
%b.promoted = load i32, i32* @b, align 4
|
|
br label %.lr.ph.i
|
|
|
|
.lr.ph.i:
|
|
%iv = phi i32 [ %ivnext, %.lr.ph.i ], [ %b.promoted, %bb ]
|
|
%indvars.iv = sext i32 %iv to i64
|
|
%arrayidx2 = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
|
|
%Bload = load i32, i32* %arrayidx2, align 4
|
|
%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
|
|
%Aload = load i32, i32* %arrayidx, align 4
|
|
%sum = add nsw i32 %Bload, %Aload
|
|
%arrayidx3 = getelementptr inbounds i32, i32* %C, i64 %indvars.iv
|
|
store i32 %sum, i32* %arrayidx3, align 4
|
|
%ivnext = add nsw i32 %iv, 1
|
|
%tmp19 = icmp slt i32 %ivnext, %N
|
|
br i1 %tmp19, label %.lr.ph.i, label %f1.exit.loopexit
|
|
|
|
f1.exit.loopexit:
|
|
%.lcssa = phi i32 [ %sum, %.lr.ph.i ]
|
|
ret i32 %.lcssa
|
|
}
|
|
|
|
@tab = common global [32 x i8] zeroinitializer, align 1
|
|
|
|
; CHECK-LABEL: non_uniform_live_out()
|
|
; CHECK-LABEL: vector.body:
|
|
; CHECK: %vec.ind = phi <2 x i32> [ <i32 0, i32 1>, %vector.ph ], [ %vec.ind.next, %vector.body ]
|
|
; CHECK: [[ADD:%[a-zA-Z0-9.]+]] = add <2 x i32> %vec.ind, <i32 7, i32 7>
|
|
; CHECK: [[EE:%[a-zA-Z0-9.]+]] = extractelement <2 x i32> [[ADD]], i32 0
|
|
; CHECK: [[GEP:%[a-zA-Z0-9.]+]] = getelementptr inbounds [32 x i8], [32 x i8]* @tab, i32 0, i32 [[EE]]
|
|
; CHECK-NEXT: [[GEP2:%[a-zA-Z0-9.]+]] = getelementptr inbounds i8, i8* [[GEP]], i32 0
|
|
; CHECK-NEXT: [[BC:%[a-zA-Z0-9.]+]] = bitcast i8* [[GEP2]] to <2 x i8>*
|
|
; CHECK-NEXT: %wide.load = load <2 x i8>, <2 x i8>* [[BC]]
|
|
; CHECK-NEXT: [[ADD2:%[a-zA-Z0-9.]+]] = add <2 x i8> %wide.load, <i8 1, i8 1>
|
|
; CHECK: store <2 x i8> [[ADD2]], <2 x i8>*
|
|
|
|
; CHECK-LABEL: middle.block:
|
|
; CHECK: [[ADDEE:%[a-zA-Z0-9.]+]] = extractelement <2 x i32> [[ADD]], i32 1
|
|
|
|
; CHECK-LABEL: for.end:
|
|
; CHECK: %lcssa = phi i32 [ %i.09, %for.body ], [ [[ADDEE]], %middle.block ]
|
|
; CHECK: %arrayidx.out = getelementptr inbounds [32 x i8], [32 x i8]* @tab, i32 0, i32 %lcssa
|
|
define i32 @non_uniform_live_out() {
|
|
entry:
|
|
br label %for.body
|
|
|
|
for.body: ; preds = %for.body, %entry
|
|
%i.08 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
|
%i.09 = add i32 %i.08, 7
|
|
%arrayidx = getelementptr inbounds [32 x i8], [32 x i8]* @tab, i32 0, i32 %i.09
|
|
%0 = load i8, i8* %arrayidx, align 1
|
|
%bump = add i8 %0, 1
|
|
store i8 %bump, i8* %arrayidx, align 1
|
|
%inc = add nsw i32 %i.08, 1
|
|
%exitcond = icmp eq i32 %i.08, 20000
|
|
br i1 %exitcond, label %for.end, label %for.body
|
|
|
|
for.end: ; preds = %for.body
|
|
%lcssa = phi i32 [%i.09, %for.body]
|
|
%arrayidx.out = getelementptr inbounds [32 x i8], [32 x i8]* @tab, i32 0, i32 %lcssa
|
|
store i8 42, i8* %arrayidx.out, align 1
|
|
ret i32 0
|
|
}
|